Britney Spears had some harsh advice for her hubby regarding his nascent singing career: Don’t get your hopes up.

Kevin Federline recently brought home some music he’d recorded and he played it for Spears, according to the new issue of In Touch Weekly.

His efforts were “greeted with hurtful laughter from his superstar wife, who was unimpressed,” reports the mag. “She said his debut CD might sell ‘a hundred, maybe a thousand’ copies if he was lucky,’” an “insider” told the mag, who added, “Kevin looked really hurt.”

Spears’ unkind review comes at a time when the new parents are said to be going through an extended rough patch. Her “tolerance for his behavior is waning quickly,” reports In Touch. For example, while Spears was busy changing their infant son’s diapers, Federline reportedly spent two hours getting his hair braided. And after a blow-up on Oct. 19, Federline went to a nightclub called Mood, where he partied until well after midnight.

“He seemed kind of out of it,” a witness told the mag. “Everyone was like, Go home to your family. Isn’t it a bit soon to be out partying?”